html,body{
    position: relative;
    height: 100%;
    width: 100%;
    overflow: hidden;
}
html{
    font-size: 16px;
}
body{
    font-size: 14px;
}
html,body,article,section,aside,div,p,h1,h2,h3,h4,h5,h6,input,textarea,button,ol,ul,li,table,caption,
thead,tbody,tfoot,tr,th,td,image,span,header,footer,canvas,nav,label{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-weight: normal;
    font-family: Helvetica, "Microsoft YaHei", sans-serif;
    -webkit-font-smoothing: antialiased;
    -webkit-overflow-scrolling: touch;
    -webkit-tap-highlight-color: transparent;
    -webkit-appearance: none;
    user-select: none;
}
a{
    text-decoration: none;
    color: #000;
}
li{
    list-style:none;
}
input ,textarea,input:focus,textarea:focus{
    outline: none;
}